Flats and apartments · Northern Ireland
Triple glazing for flats and apartments in County Londonderry
From Derry to Magherafelt, we arrange flat and apartment triple glazing for homes across County Londonderry, with every quote fixed for the specification shown.
Quieter, warmer flats, fitted from inside where possible. Before replacing windows in a flat, check two things.
Guide prices across County Londonderry
One window
medium uPVC window, fitted from inside
£945 – £1,195inc VAT · £790 – £995 ex VAT
- Fitted from inside where access allows
- Old frame removed and taken away
- Made good inside
2-bed flat
5 medium windows
£4,595 – £5,695inc VAT · £3,830 – £4,745 ex VAT
- One visit, usually one day
- Consent paperwork list provided
- Made good inside
2-bed flat, aluminium
5 medium windows
£7,495 – £9,295inc VAT · £6,245 – £7,745 ex VAT
- Slim frames to match the block
- Consent paperwork list provided
- Made good inside
Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.
Towns in County Londonderry
Rules in Northern Ireland
In Northern Ireland, replacement windows must meet 1.6 W/m²K, or a Window Energy Rating of band C or better. Replacing windows or external doors does not need full plans or a building notice, but the work must still comply; enlarging an opening or other structural change needs building control approval.
Planning: Check with your council planning office before changing the style, material or size of windows or doors, and always for listed buildings, conservation areas and flats.
How it works
The surveyor measures every opening, checks ventilation, escape windows and safety-glass zones, and talks through styles. Your written quote lists each item with its glass build-up and U-value, and the price is fixed for that specification.
- Every opening measured, including escape and vent needs
- Frames rated for the weight of triple glass
- Old windows removed and taken away
- Each opening closed up the same day
Questions
What about tall blocks?
Higher-risk buildings (18 m or 7 storeys and over in England) have extra building safety requirements. Talk to your building’s accountable person first.
Is triple glazing good for a flat on a busy road?
Yes, especially with an acoustic laminated pane, which makes the bigger difference to noise.
Can windows in a flat be fitted from inside?
Often yes, which avoids scaffolding. It depends on the window design and access, checked on survey.
Do you cover all of County Londonderry?
We arrange surveys and fitting across County Londonderry.
Do I need permission for flat and apartment triple glazing in Northern Ireland?
In Northern Ireland, check with your council planning office before changing the style, material or size of windows, and always for listed buildings and flats.
Flats and apartments in nearby areas of Northern Ireland
Other products in County Londonderry
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Passivhaus and EnerPHit
Flats and apartments across County Londonderry
Written quote fixed for the specification, after a free survey. No building notice is needed for a straight replacement in Northern Ireland; we fit to the regulations and give you a written handover pack.